Paper-cutting machine



Apr. 10, 1923.,

1,451,120 C. SEYBOLD PAPER CUTTING MACHINE Filed Feb. 9, 1921 x4- 8 =====5I z 4 sheets-sheet 1 Apr. 10, 1923.

- C. SEYBOLD PAPER CUTTING MACHINE Filed Feb. 9, 1921 4 sheets-sheet 2 .(Ajar. 10, 1923. 1,451,120

-: I v c. SEYBOLD PAPER CUTTING MACHINE Filed Feb. 9, 1921 4 shefits shee't 5 f 0 35 I 1a,, j 26 0- II,,.I\ 'O 0 mzhm/ ATTORNEYS.

Apr. 10, 1923.

' l,451,l2@ C. SEIYBOLD 1 PAPER CUTTING MACHINE Filed Feb. 9, 1921 4 shts-sheet 4 V 1 3o 26 27 Z 37 E; 7

Arm/Mfrs Patented Apr. 10, 1923.

CHARLES SEYBOLD, OF DAYTON, OHIO.

PAPER-CUTTING- MACHINE.

Application filed February 9, 1921.

To all w ham it may concern Be it known that I, CHARLES SEYBoLD, a citizen of the United States, and a resident of the city of Dayton, in the county of Mont- 5 gomery and State of Ohio, have invented certain new and useful Improvements in Paper-Cutting Machines, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming part of this specification.

My improvements relate to machines for cutting and trimming paper and the object of the invention is to supply a small sized machine which shall be fully automatic in its action, with the various parts simplified and combined in order to provide for automatic power driven knife and clamp, with a minimum number ofparts, with simplicity of adjustment. I

:0 Among other things, the knife is arranged to be guided for a shearing cut, in a minimum vertical space, by an arrangement of diagonal knife guides, one at a different angleto the vertical than the other, so that the :5 knife in its stroke) shall descend with a slightly rocking movement, while for the adjustment of the knife, if ground unevenly, the knife guide is adapted to be adjusted vertically.

0 The clamp is also arranged to be driven by the action of a separable lever'arm actuated by the power mechanism permitting the clamp to be operated also by a foot treadle, and the clamp is also suspended on studs ec- 6 centrically mounted in blocks so that the level of the clamp can be adjusted by simply turning the blocks.

Other features of improvement and advantage will be pointed out in connection L0 with the detailed description.

In the drawings,

Figure 1 is a front elevation of my im proved machine.

Figure 2 is a side elevation of the left L5 hand side of the machine.

Figure 3 is a similar elevation of the right hand side.

Figure 4 is a top plan view with various parts omitted.

Serial No. 443,685.

Figure 5 is a detail side elevation of the clamp operating mechanism.

Figure 6 isa perspective view of one of the clamp blocks.

The frame-work 1 for the operating parts is preferably cast in a single piece, upon which are supported the cutting table 2 and the side standards 3, 3, with the arch 4.

The driving shaft 5 is mounted in suitable bearings in the lower portion of the base and is driven by pulley 6 and belt 7 from any suitable source of power, in the present. instance by an electric motor 8 supported in a bracket 9 on top of the side standard 3.

The driving shaft is provided with the usual clutch mechanism (not showniwhich is actuated by the hand'lever 10 in front of the machine. The driving shaft carries a pinion. 11 meshing with the large driving gear wheel 12 on the power shaft 13 of the machine, through which the knife carrier and the clamp mechanism are actuated.

The knife carrier 14, to which the cutting knife 15 is bolted, is provided with the slides 16,. which slide in diagonally disposed guides 17 18, mounted in the standards 3, 3, of the frame.

These guides are formed at slightly different angles to the vertical. The right hand guide 17 is set at an angle of 49 and the corresponding guide at the other end, at an .angleof These angles I have found preferable, although I do not wish to be, confined to any specific angle. The result of this is that as the knife is drawn down, it is given a double shearing out, one due to the angle of the knife, which is higher at one end than the other, in accordance with the usual construction and the other due to the varying angle of the guide blocks which are swiveled on studs on the knife carrier frame so as to permit the blocks to move in the guides.

The knife carrier is actuated from one side only of the machine by the crank stud 19 projecting from the face of the gear wheel 12, which crank is coupled to the knife car rier by the stirrups 20 and 21, pivoted respectively to the crank stud and the end of the knife carrier and with the stirrups connected by the rod 22, screw threaded and adjustable by the nuts 23, 23, so as to adjust the position of the knife carrier as the knife is worn away in sharpening. In order to provide for a still further adjustment, the guide block 17 is itself adjustable vertically on the standard, the bolts being mounted in slots in the block, so that by loosening the two retaining bolts 24, 25, the guide block can be raised or lowered and thus the position of the knife still further adjusted, in the event of the knife being ground down in sharpening too much at one end. This adjustment is obtained by the hand screw 24 which is mounted in a bracket on top of the guide 17 and bears upon the side standard.

The clamp bar 26 is located immediately in the rear of the knife and is provided with studs 27 at either end, which project through slots 28 in the side standards and which are mounted in the rectangular or square blocks 29, 29. The hole/v29 in the block for the reception of the clamp studs is slightly eccentric of the sides of the block, so that by withdrawing the cotter pin, removing the block, turning it and replacing it, the position of the clamp may be varied in the event it should be found not to bear evenly on the paper pile at both ends. These blocks are mounted to slide between the jaws 30 of the bifurcated clamp arms 31, secured to each end of the clamp shaft 32 and the clamp arm on one end is provided with a projecting portion 33 adapted to interlock with a corresponding projection 34 on an actuating arm 35, which is loosely pivoted on the outer end of the clamp shaft 32.

The lower, outer end of the arm 35 is pivoted to the rod 36, which is frictionally enclosed in the clamping box 37, coupled to a crank arm 38 at the end of the power shaft 13. The result of this construction is as the shaft 13 is rotated, the clamping box and rod is reciprocated to rock the actuating arm 35 and thus through the clamp arms 31 to pull down the clamp and compress the paper pile under the clamp within the, limits of the frictional hold of the clamping box 37.

In order to return the clamp to its normal, elevated position, I make use of a coiled spring 38 mounted in the clamp shaft 32,

one end secured by the adjustable lever 39 to the shaft and the other end bearing in a lug-40 on the side standard. In order to operate the: clamp manually, I provide a foot treadle 41 pivoted to the frame at 42 and coupled to-the clamp arm 31 by a con nec'ting rod 43.

The machine is also supplied with the usual back gauge 44 adjusted by the usual hand wheel 45. I

I have in the construction above described, been able to bring tag ther in spare all the various features necessary to furnish an automatic paper cutting machine with power clamp, with inexpensive means for adjusting the parts for wear.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a paper cutting machine, the combination with the frame and reciprocating knife carrier, with mechanism for actuating said carrier from one end only, of diagonal guides for the knife carrier at each side of the frame, said guides arranged at a slight angle to each other with slide blocks swiveled to the knife carrier sliding in said guides whereby a double shearing cut may be obtained for the knife in its passage through the paper pile.

2. In a paper cutting machine, the combination with the frame and reciprocating knife carrier, with mechanism for actuating said carrier from one end only, of a knife secured to the carrier at a slight angle to the horizontal, and diagonal guides for the knife carrier at each side of the frame, said guides arranged at a slight angle to each other with slide blocks swiveled to the knife carrier sliding in said guides whereby a double shearing cut may be obtained for the knife in its passage through the paperv 3. In a paper cutting machine, the combination with the frame and reciprocating knife carrier, with mechanism for actuating said carrier from one end only, of a knife secured to the carrier, and diagonal guides for the knife carrier at each side of the frame, said guides arranged at a slight angle to each other with slide blocks swiveled to the knife carrier sliding in said guides whereby a double shearing cut may be obtained for the knife in its passage through the paper pile, at least one of said guides being adjustable vertically to adjust the position of the knife.

4. In a paper cutting machine, a clamp bar for the paper pile, studs on the ends of the clamp bar, blocks in which said studs are eccentrically mounted whereby the level of the clamp can be adjusted, and means for actuating said blocks to actuate the clamp.

5. In a paper cutting machine, a clamp bar for the paper pile, studs on the ends of the clamp bar, blocks in which the studs are mounted, a rock shaft with slotted arms to engage said blocks, and a friction clutch mechanism for actuating the rock shaft to apply and to hold the clamp bar under frictional pressure on the paper pile.

6. I11 a paper cutting machine, a clamp bar for the paper pile, a rock shaft with arms engaging the ends of the clamp, a rock lever loosely pivoted on the rock shaft adapted to engage one of the slotted arms on he 9QllpreSB 0D stake at the clamp, and;

friction clutch mechanism for actuating the engage said blocks, a rock lever loosely rock lever to apply and hold the clamp on pivoted on the rock shaft adapted to engage the paper pile. one of the slotted arms on the compression 10 7. In a paper cutting machine, a clamp stroke, and friction clutch mechanism for 5 bar for the paper pile, studs on the, ends of actuating the rock lever to apply and to hold the clamp bar, blocks in Which the studs are the clamp on the paper pile. mounted, a rock shaft With slotted arms to CHARLES SEYBOLD. 

